This video is by the nonprofit group, the International Union for Conservation of Nature and Natural Resources (IUCN). It is a plea to the citizens of the rich countries of the world to rethink the many ways we exploit the world's resources before it's too late to stop our crash course with the mass extinction of millions of animal and plant species.

After he swam the North Pole, Lewis Pugh vowed never to take another cold-water dip. Then, he heard of Mt. Everest's Lake Imja -- a body of water at an altitude of 5,300 meters, entirely created by recent glacial melting -- and began a journey that would teach him a radical new way to approach both swimming and how to think about climate change.

Take a deep breath and imagine the oceans.... This disturbing video is a short Greenpeace documentary outlining the threats that humans pose to our oceans and a proposal for what we ALL can do to help restore their health. [In short, if you haven't stopped eating all fish -- and most especially shrimp -- yet, this video will make you think seriously about this decision]

Think of penguins as ocean sentinels, says Dee Boersma -- they're on the frontlines of sea change. Sharing stories of penguin life and culture, she suggests that we start listening to what penguins are telling us.

We all know the arguments that being vegetarian is better for the environment and for the animals -- but in a carnivorous culture, it can be hard to make the change. Graham Hill has a powerful, pragmatic suggestion ...

In this bracing talk, coral reef ecologist Jeremy Jackson lays out the shocking state of the ocean today: overfished, overheated, polluted, with indicators that things will get much worse. Astonishing photos and stats make the case. So in a nutshell: we've wrecked everything around us: the water, the air, the animals, the climate, and any illusion of world peace we ever had. We're technologically advanced, yet we're dependent upon drugs for everything, and we're politically indecisive, and distrustful of science. Worse, we can't decide upon gay marriage and abortion. If there's one thing we need, it's to legalize same-sex unions and abortion, because both of those accomplish the one thing that can help humanity: creating fewer people. Basically, this overpopulation problem WILL be addressed one way or another, but if we don't take immediate action, nature will, and believe me, we won't like it.

"In an alarming trend, temperatures this spring have risen. Consider this: on February 6, it was ten degrees. Today it hit almost 80. At this rate, by August, it will be 220 degrees!" declares Stephen Colbert. "So clearly folks, the climate debate rages on. Which is great because I like debate, and I love rage."

From its extraction through sale, use and disposal, all the stuff in our lives affects communities at home and abroad, yet most of this is hidden from view. The Story of Stuff is a 20-minute, fast-paced, fact-filled look at the underside of our production and consumption patterns. The Story of Stuff exposes the connections between a huge number of environmental and social issues, and calls us together to create a more sustainable and just world. It'll teach you something, it'll make you laugh, and it just may change the way you look at all the stuff in your life forever.

This video documents an awesome fight for survival as a grown male polar bear takes on a walrus colony at the edge of the Arctic circle. This was a truly epic battle, phenomenally captured in high quality, from the BBC natural history masterpiece, Planet Earth.